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- /*
- * Mach Operating System
- * Copyright (c) 1991,1990,1989 Carnegie Mellon University
- * All Rights Reserved.
- *
- * Permission to use, copy, modify and distribute this software and its
- * documentation is hereby granted, provided that both the copyright
- * notice and this permission notice appear in all copies of the
- * software, derivative works or modified versions, and any portions
- * thereof, and that both notices appear in supporting documentation.
- *
- * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
- * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
- * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
- * Carnegie Mellon requests users of this software to return to
- *
- * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
- * School of Computer Science
- * Carnegie Mellon University
- * Pittsburgh PA 15213-3890
- *
- * any improvements or extensions that they make and grant Carnegie Mellon
- * the rights to redistribute these changes.
- */
- /*
- * Author: David B. Golub, Carnegie Mellon University
- * Date: 3/90
- *
- * Definitions to make new IO structures look like old ones
- */
- #ifndef _DEVICE_BUF_H_
- #define _DEVICE_BUF_H_
- /*
- * io_req and fields
- */
- #include <device/io_req.h>
- #define buf io_req
- /*
- * Redefine fields for drivers using old names
- */
- #define b_flags io_op
- #define b_bcount io_count
- #define b_error io_error
- #define b_dev io_unit
- #define b_blkno io_recnum
- #define b_resid io_residual
- #define b_un io_un
- #define b_addr data
- #define av_forw io_next
- #define av_back io_prev
- #define b_physblock io_physrec
- #define b_blocktotal io_rectotal
- /*
- * Redefine fields for driver request list heads, using old names.
- */
- #define b_actf io_next
- #define b_actl io_prev
- #define b_forw io_link
- #define b_back io_rlink
- #define b_active io_count
- #define b_errcnt io_residual
- #define b_bufsize io_alloc_size
- /*
- * Redefine flags
- */
- #define B_WRITE IO_WRITE
- #define B_READ IO_READ
- #define B_OPEN IO_OPEN
- #define B_DONE IO_DONE
- #define B_ERROR IO_ERROR
- #define B_BUSY IO_BUSY
- #define B_WANTED IO_WANTED
- #define B_BAD IO_BAD
- #define B_CALL IO_CALL
- #define B_MD1 IO_SPARE_START
- /*
- * Redefine physio routine
- */
- #define physio(strat, xbuf, dev, ops, minphys, ior) \
- block_io(strat, minphys, ior)
- /*
- * Export standard minphys routine.
- */
- extern void minphys(io_req_t);
- /*
- * Alternate name for iodone
- */
- #define biodone iodone
- #define biowait iowait
- #endif /* _DEVICE_BUF_H_ */
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